1. Andersen, R., and O. W. Anderson, A Decade of Health Services: Social Survey Trends in Use and Expenditure (Chicago, IL: University of Chicago Press, 1967).
2. Anderson, O.W., P. Collette, and J. J. Feldman, Changes in Family Medical Care Expenditures and Voluntary Health Insurance: A Five-Year Resurvey (Cambridge, MA: Harvard University Press, 1963).
3. The effect of HMOs on fee-for-service health care expenditures: Evidence from Medicare